Mechanical movement.



No. 659,8!U. Patented Oct. 16, I900.

E. CHERRY. MECHANICAL MOVEMENT.

(Application filed Dec. 30, 1899.)

(No Model.)

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lthvrrnn STATES FFIGEQ EDGAR CHERRY, OF SANTA ROSA, CALIFORNIA.

MECHANICAL MOVEMENT.

SPECIFICATION formingpart of Letters Patent No. 659,810, dated October16, 1900. Application filed December 30,1899. Serial No. 742,106. Nomodel.)

To all whom/ 7'15 warty concern.-

le it known that l, EDGAR CHERRY, a citizen of the United States,residing at Santa Rosa, in the county of Sonoma and State of California,have invented certain new and useful Improvements in Mechanical Movements, of which the following is a specification.

My invention relates to improvements in mechanical movements, theobjects of my invention being to provide mechanism whereby areciprocating or intermittent rotary motion maybe derived from acontinuous rotary motion, also to provide means whereby the intervals ofrest and movement in the derived motion may be varied at pleasure, andalso to provide means for reversing at pleasure the direction of anintermittent motion of a shaft driven from a shaft revolvingcontinuously in the same direction.

Hyinvention is particularlyapplicable for reversing the propellingmechanism in boats driven by gasolene-engines, for hoisting-engines, foriron-planing machines, for automobiles, and for many other purposes notnow specified.

In the accompanying drawings, Figure 1 is a side elevation of myimproved device. Fig. 2 is a vertical section thereof. Fig. 3 is a frontview showing a modified form of the invention for reversing the motionof rotation, and Fig. dis a vertical section of one of the joints of thesprocket-chain enlarged.

Upon the vertical driving-shaft 1 is mounted the sprocket-wheel 2, theteeth of which engage the links 3 of the sprocket-chain 4:, said chaintraveling horizontally to a second sprocket-wheel 5 on an idle shaft 6.The rivets 7 of said chain are hollow and are screwthreaded on theirinner surface, as shown at 8, to receive pins 9, screwed thereinto, theends of said pins projecting upwardly from said rivets, and thus beingadapted to enter between pins 10, extending in a circle from one face ofa wheel 11 on the driven shaft 12. Similar pins also extend from theother face of the wheel. Strengtheningplates 13 are arranged parallelwith the wheel, in which plates the outer ends of the pins 10 aresupported. It is evident thatif pins 9 be screwed in certain of thehollow rivets 7, the other rivets being left empty, an intermittentreciprocating rotary motion will be imparted to the shaft 12 from thecontinuous motion of the driving-shaft 1, and this derived motion may bevaried as to the periods of rest and movement by inserting orwithdrawing a suffieient number of the pins 9 from the hgllow rivets. Inorder to insure engagement of the pins 10 with the pins 9, aguiding-surface 15 is provided, over which-the chain travels.

In the modification of the invention shown in Fig. 3 an arrangement isshown whereby the direction of. intermittent rotation of a driven shaftmay be reversed at pleasure without reversing the direction of rotationof the continuously-moving driving-shaft. In this construction wheelsand 21 are mounted loosely on a shaft 22, each wheel having a hub 23,and between said hubs is a sliding clutch 24., having a feather 25sliding in a groove 26 in said shaft. A forked lever 27 is used forthrowing the clutch into engagement with one or the otherof the hubs 23.The wheels 20 and 21 are rotated in opposite directions by asprocket-chain at in the manner above described, and thus the directionof rotation the clutch as desired.

I claim- 1. In a mechanical movement, the combination of a pin-wheel, asprocket-wheel and a sprocket-chain traveling around the latter andtangentially to the former wheel, the chain having hollow rivets andpins removably secured in said rivets, which pins engage the pins of thepin-wheel, substantially as de scribed.

2. In a mechanical movement, the combination of a shaft, two circularseries of pins carried on said shaft as an axis, a sprocketwheel and asprocket-chain traveling around the latter and passing tangentially toeach series of pins in opposite directions, said chain having pinsremovably mounted in the axes of certain of its links and projectingtherefrom, which pins engage alternately the pins on the two series,substantially as described.

3. In a mechanical movement, the combination of a shaft, two circularseries of pins carried on said shaft as an axis, a sprocketwheel andasprocket-cl1ain traveling around the latter and passing tangentially toeach series in opposite directions, said chain havof the shaft 22 may bereversed by moving IFO ing pins removably mounted in the axes of I Inwitness whereof I have hereunto set my certain of its links andprojecting therefrom, hand in the presence of two subscribing wit- Whichpins engage alternately the pins on the nesses.

two series, and a clutch for throwing one or EDGAR CHERRY. the other ofthe series into revoluble engage- Witnesses:- ment with the shaft,substantially as de- FRANCES M. WRIGHT,

scribed. Z. A. DANIELS.

